Kiekko-Vantaa, who finished sixth in the hockey Mestis regular season, advanced to 3-2 semi-finals.
Imatra Ketterä, Imatra’s permanent success, bent in front of her home audience in the fifth and decisive semi-finals with a score of 1-3 in the fifth and decisive semi-finals.
The last time Ketterä had been outside the semi-finals in 2018. It had taken three of the last five Mestis championships.
Jimi Rönkkönen took the Imatra lead in the opening round but tough K-Vantaa turned the settings Elias Ulander, Santeri Peltola and Niklas Nordgren hits.
Kiekko-Vantaa will challenge the Jokerit, who won the regular season with a 30-point margin on the semi-finals starting in the Helsinki Ice Hall on Wednesday.
The match between the season was marked with a 5-1 win for the Jokers.
In the second semi -final, the reigning master IPK and Jokp will meet. With four wins, the finals will be awarded.